121298971 has 2 divisors, whose sum is σ = 121298972. Its totient is φ = 121298970.

The previous prime is 121298929. The next prime is 121298981. The reversal of 121298971 is 179892121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121298971 - 2¹⁹ = 120774683 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (121298911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60649485 + 60649486.

It is an arithmetic number, because the mean of its divisors is an integer number (60649486).

Almost surely, 2^121298971 is an apocalyptic number.

121298971 is a deficient number, since it is larger than the sum of its proper divisors (1).

121298971 is an equidigital number, since it uses as much as digits as its factorization.

121298971 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 40.

The square root of 121298971 is about 11013.5812068555. The cubic root of 121298971 is about 495.0157747583.

The spelling of 121298971 in words is "one hundred twenty-one million, two hundred ninety-eight thousand, nine hundred seventy-one".